PING

PING

PING is a podcast for people who want to look behind the scenes into the workings of the Internet. Each fortnight we will chat with people who have built and are improving the health of the Internet. The views expressed by the featured speakers are their own and do not necessarily reflect the views of APNIC.

Episodes

Faster Network design with simpler hardware: TCP Flow control and ECN.

September 17, 2025 • 52 mins
In this episode of PING, APNIC Chief Scientist Geoff Huston shares a story from the recent AusNOG in Melbourne and connects it to measurement work at APNIC Labs, exploring how modern IP flow control manages ‘fair shares’ of the network. At AusNOG 2025, Geoff attended a talk by Lincoln Dale of Amazon AWS titled “No Packet Left Behind: AWS’s Approach to Building and Operating Reliable Networks”. The presentation examined how AWS s...
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Whats going on in bad traffic in 2025

September 3, 2025 • 27 mins
In this episode of PING, Adli Wahid, APNIC's Security Specialist discusses the APNIC honeypot network, an investment in over 400 collectors distributed throughout the Asia Pacific, collecting data on who is trying to break into systems online and use them for malware, destributed denial of service, and command-and-control systems in the bad traffic economy. Adli discusses how APNIC Members can get access to the results of honeyn...
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The Inevitability of Centrality

August 20, 2025 • 60 mins
In this episode of PING, APNIC’s Chief Scientist, Geoff Huston, discusses the economic inevitability of centrality, in the modern Internet. Despite our best intentions, and a lot of long standing belief amongst the IETF technologists, no amount of open standards and end-to-end protocol design prevents large players at all levels of the network (from the physical infrastructure right up to the applications and the data centres which...
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Rob Kisteleki on RIPE Atlas

August 6, 2025 • 40 mins
In this episode of PING, Robert Kisteleki from the RIPE NCC discusses the RIPE Atlas system -a network of over 13,000 measurement devices deployed worldwide in homes, exchange points, stub and transit AS, densely connected regions and sparse island states. Atlas began with a vision of the world at night -a powerful metaphor for where people are, and where technology reaches. Could a measurement system achieve sufficient density ...
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A Day in the Life of BGP

July 23, 2025 • 61 mins
In this episode of PING, APNIC’s Chief Scientist, Geoff Huston, discusses "a day in the life of BGP" -Not an extraordinary day, not a special day, just the 8th of May. What happens inside the BGP system, from the point of view of AS4608, one ordinary BGP speaker on the edge of the network? What kinds of things are seen, and why are they seen? Geoff has been measuring BGP for almost it's entire life as the internet routing pro...
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Kentik's view of Secure BGP in 2025

July 9, 2025 • 29 mins
In this episode of PING, Doug Madory from Kentik discusses his rundown of the state of play in secure BGP across 2024 and 2025. Kentik has it’s own internal measurements of BGP behaviour and flow data across the surface of the internet, which combined with the Oregon University curated routeviews archive means Doug can analyse both the publicly visible state of BGP from archives, and Kentik’s own view of the dynamics of BGP change,...
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Downloading the root

June 25, 2025 • 57 mins
In this episode of PING, APNIC’s Chief Scientist, Geoff Huston, discusses the root zone of the DNS, and some emerging concerns in how much it costs to service query load at the root. In the absence of cacheing, all queries in the DNS (except ones the DNS system you ask is locally authoritative for anyway) have to be sent through the root of the DNS, to find the right nameserver to ask for the specific information. Thanks to cach...
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Global Cyber Alliance and measuring the bad traffic

June 11, 2025 • 34 mins
In this episode of PING, We’re talking to Leslie Daigle from the Global Cyber Alliance (GCA) again, discussing GCA’s honeynet project. Leslie spoke with PING back in January 2024, and in this episode we re-visit things. Honeynets (or Honey farms) are deliberately weakly protected systems put online, to see what kinds of bad traffic exist out in the global Internet, where they come from and what kinds of attack they are mounting. ...
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DELEG: Changing the DNS engine in flight again

May 28, 2025 • 59 mins
In this episode of PING, APNIC’s Chief Scientist, Geoff Huston, revisits changes underway in how the Domain Name System (DNS) delegates authority over a given zone and how resolvers discover the new authoritative sources. We last explored this in March 2024.  In DNS, the word ‘domain’ refers to a scope of authority. Within a domain, everything is governed by its delegated authority. While that authority may only directly manage ...
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DFOH,MVP & GILL: New ways of looking at BGP

May 14, 2025 • 37 mins
In this episode of PING, Professor Cristel Pelsser who holds the chair of critical embedded systems at UCLouvain Discusses her work measuring BGP and in particular the system described in the 2024 SIGCOMM “best paper” award winning research: “The Next Generation of BGP Data Collection Platforms” Cristel and her collaborators Thomas Alfroy, Thomas Holterbach, Thomas Krenc and K. C. Claffy have built a system they call GILL, avail...
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The multiple ways to do multiple paths

April 30, 2025 • 45 mins
In this episode of PING, APNIC’s Chief Scientist, Geoff Huston, discusses the history and emerging future of how Internet protocols get more than the apparent link bandwidth by using multiple links and multiple paths. Initially, the model was quite simple, capable of handling up to four links of equal cost and delay reasonably well, typically to connect two points together. At the time, the Internet was built on telecommunicatio...
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Pulse Internet Measurement Forum at APRICOT 2025: Part 2

April 16, 2025 • 40 mins
Last month, during APRICOT 2025 / APNIC 59, the Internet Society hosted its first Pulse Internet Measurement Forum (PIMF). PIMF brings together people interested in Internet measurement from a wide range of perspectives — from technical details to policy, governance, and social issues. The goal is to create a space for open discussion, uniting both technologists and policy experts. In this second special episode of PING, we cont...
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DNS Computer says "NO"

April 2, 2025 • 44 mins
In this episode of PING, APNIC’s Chief Scientist, Geoff Huston, discusses the surprisingly vexed question of how to say ‘no’ in the DNS. This conversation follows a presentation by Shumon Huque at the recent DNS OARC meeting, who will be on PING in a future episode talking about another aspect of the DNS protocol. You would hope this is a simple, straightforward answer to a question, but as usual with the DNS, there are more com...
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Pulse Internet Measurement Forum at APRICOT Pt 1

March 19, 2025 • 36 mins
At the APRICOT/APNIC59 meeting held in Petaling Jaya in Malaysia last month, The internet society held it's first PIMF meeting. PIMF, or the Pulse Internet Measurement Forum is a gathering of people interested in Internet measurement in the widest possible sense, from technical information all the way to policy, governance and social questions. ISOC is interested in creating a space for the discussion to take place amongst the comm...
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Night of the BGP Zombies

March 5, 2025 • 58 mins
In this episode of PING, APNIC’s Chief Scientist, Geoff Huston explores bgp "Zombies" which are routes which should have been removed, but are still there. They're the living dead of routes. How does this happen? Back in the early 2000s Gert Döring in the RIPE NCC region was collating a state of BGP for IPv6 report, and knew each of the 300 or so IPv6 announcements directly. He understood what should be seen, and what was not b...
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RPKI Views: The archive of RPKI state

February 19, 2025 • 49 mins
In this episode, Job Snijders discusses RPKIViews, his long term project to collect the "views" of RPKI state every day, and maintain an archive of BGP route validation states. The project is named to reflect route views, the long-standing archive of BGP state maintained by the University of Oregon, which has been discussed on PING. Job is based in the Netherlands, and has worked in BGP routing for large international ISPs and c...
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How Many DNS Nameservers is enough?

February 5, 2025 • 59 mins
In his first episode of PING for 2025, APNIC’s Chief Scientist, Geoff Huston returns to the Domain Name System (DNS) and explores the many faces of name servers behind domains. Up at the root, (the very top of the namespace, where all top-level domains like .gov or .au or .com are defined to exist) there is a well established principle of 13 root nameservers. Does this mean only 13 hosts worldwide service this space? Nothing could ...
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RISKY BIZ-ness

January 22, 2025 • 44 mins
Welcome back to PING, at the start of 2025. In this episode, Gautam Akiwate, (now with Apple, but at the time of recording with Stanford University) talks about the 2021 Advanced Network Research Prize winning paper, co-authored with Stefan Savage, Geoffrey Voelker and Kimberly Claffy which was titled "Risky BIZness: Risks Derived from Registrar Name Management". The paper explores a situation which emerged inside the supply cha...
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Post-Quantum Cryptography

December 11, 2024 • 65 mins
In the last episode of PING for 2024, APNIC’s Chief Scientist Geoff Huston discusses the shift from existing public-private key cryptography using the RSA and ECC algorithms to the world of ‘Post Quantum Cryptography. These new algorithms are designed to withstand potential attacks from large-scale quantum computers and are capable of implementing Shor’s algorithm, a theoretical approach for using quantum computing to break the cry...
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Measuring DNSSEC keying "drift" between parent and child

November 27, 2024 • 36 mins
This time on PING, Peter Thomassen from SSE and DEsec.io discusses his analysis of the failure modes of CDS and CDNSKEY records between parent and child in the DNS. These records are used to provide in-band signalling of the DS record, fundamental to the maintenance of a secure path from the trust anchor to the delegation through all the intermediate parent and grandparent domains. Many people use out-of-band methods to update this...
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